have gone on trial over the fraud, which has sparked a global healthcare crisis after it emerged that the implants were made of industrial silicon, more suitable for mattress making, and that they were prone to leaking after implantation. >> there has been confusion after -- over responsibility for aftercare and subsequent costs. many clinics who undertook the original treatment have refused to take subsequent work free of charge because pip is now insolvent. >> the cases being tried in a convention center to cope with the crowds. more than five 5000 women are registered as plaintiffs. they want justice for -- more than 5000 women are registered as plaintiffs. they want justice for what they see as fraud. >> we want doctors to take care of us. we are putting our lives in their hands, and then we are tricked? it is frightening. >> they have waited years for the trial to begin. the focal point of the vic dem'' anger is john claude maass -- victims' anger is jean-claude masss. he is accused of using industrial silicon to cut costs. many of the implants ruptured, causing infections.